libqos: convert I2C to qgraph

Create an i2c-bus interface, corresponding to the I2CAdapter struct.
Wrap IMXI2C and OMAPI2C with a QOSGraphObject, and add the get_driver
function to retrieve the I2CAdapter.

The conversion is still not complete; for simplicity, i2c_recv and
i2c_send (along with their wrappers) still take an adapter/address
pair.  Fixing that would be complicated until the tests are converted
to qgraph, so it is left for after the conversion.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/libqos/i2c.c b/tests/libqos/i2c.c
index daf9a96617..8117d13170 100644
--- a/tests/libqos/i2c.c
+++ b/tests/libqos/i2c.c
@@ -68,3 +68,11 @@ void i2c_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
     data[1] = value & 255;
     i2c_write_block(i2c, addr, reg, data, sizeof(data));
 }
+
+void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr)
+{
+    QI2CDevice *i2cdev = g_new0(QI2CDevice, 1);
+
+    i2cdev->bus = i2c_bus;
+    return &i2cdev->obj;
+}